Stave-crozing machine



(No Model.) 4 Sheets-sheet A1.

J. W. CALLAHAN. STAVB GROZING MAG-EINE.

Patelted Aug. 9, '1887. Qn

N. PETERS. Phutu-Lilhognpher, wzshingwu. DA c.

. (Nd Model.) l 4 sheets-sheet 2.v

J. W. CALLAHAN. lSTAVE GROZING MACHINE.

Patented-Aug. 9, 1887.

N. PETERS. Pimm-Liumgmplmr. washingmn. D C.

' 4 sheets-sheen 3.

(No Model.)

. J. W. CALLAH-AN.

STAVE GRGZING MACHINE. No. 367,890. Patented Aug.v 9', 1887.

N (TENS. Phmwmhagmpher, washnglun. D. C.

(N Model.) 4 'sheets-sheetV 4.

J. W. GALLAHAN. l STAVB GROZING MACHINE.

No. 367,890. Patented Aug. 9', 1887.

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UNITED STATES- PATENT OFFICE.

JAMES WEST CALLAHAN, OF EV IBERIA, LOUISIANA.

STAVE-CROZING MACHINE.

SPECIFICATION forming part of Letters Patent No. 367,890, dated August 9, 1887.

Application led July 20, 1886. Serial No. 208,551. (Nolnodel.)

T all whom it may concern:

Be it known that I, JAMES WEsT CALLA- HAN, residing atNew Iberia, in the parish of Iberia and State of Louisiana, have made certain new and useful Improvements in Stave- Orozing Machines, of which the following is a specification.

My invention relates to, improvements in stave-crozng machines; and it consists'of a machine of the class named having a movable stave-receiving bed, a series of bearing or supporting blocks to receive the staves, means to adjust said blocks toward or from a cutterhead the shaft of which rotates in a fixed plane parallel with the surface of said bed, means to hold the staves securely in stationary position when being operated upon by the cut ter-head, and means to hold the bed in xed or stationary position at the opposite sides of the cutter-head and to release said bed from such xed position when a stave is being secured thereon, passed below the cutter-head, or removed therefrom, all substantially as illustrated in the accompanying drawings, and hereinafter specifically described.

In the drawings, in which similar letters of reference denote similar parts, Figure lrepresents a top plan view, partly in section, of a stave-crozing machine constructed in accordance with my invention. Fig. 2 is a side elevation, partly in section, thereof. Fig. 3 is a transverse sectional view taken on the line x x of Fig. l, looking in direction of the arrow. Fig. 4 is a similar sectional view taken on the line y y. Fig. 5 is a rear end elevation. Fig. 6 represents a detached detail View of one of the blocks for adjusting the staves toward or from the cutter-head. Fig. 7 is a detached detail perspective view of the head-block, its attached guide-arms, and gage-block. Fig. 8 is a detached enlarged detail sectional view, taken on the line 2 3 of Fig. 1', of a pair of the stave-clamping arms, showing different positions of said arms by dotted lines and the mechanism for operating said arms. Fig. 9 represents a detached detail sectional view,on the line et 5 of Fig. 1,0f the clamping-lever and the'mechanism employed to hold the stave-receiving bed stationary at opposite sides of the cutter-head. Fig. l() is a perspective viewof one 0f the guides for the vertically-moving frame.

A' designates the foundation or base which supports the operating mechanism, and which in the presentinstance consists in a frame com- V verse rail, a3, that supports the rotating cutter-head, hereinafter to be described. The frame A may be braced in any desired manner to impart the requisite degree of stability to the machine.

To opposite ends of the frame A, upon the rails o a, thereof are secured transversely-extending curved track-rails B B', upon which the stave-receiving bed O is placed and slides. Each of said track-rails B B' consists, preferably, of a thin plate of wrought or cast metal, having its upper edge, as at t, curved to conform to any desired radius of a circle, and is provided at its lower side edges with laterallyprojecting lugs b', apertured to receive bolts b2, by which said track-rails are secured to the rails c, as shown. The lower edges of said track -rails B B may have any desired conguration of outline; alsc,the lugs b may be separate from said track-rails, and in the form of brackets secured to the rails c in contact with said track-rails.

O designates the stave1'eceiving bed, which consists, essentially, in a rectangular metal frame havingV at predetermined points inwardly-bcnt portions c to form slot c', wherein clamping arms orlevers,hereinafter described, operate toward and from the staves. vide the frame O at points adjacent to the iuwardly-bent portions c with transverse bars YO', that extend from side to side of the frame, and are secured thereto by rivets to impart rigidity to said frame, and also to support parts of the operating mechanism mounted thereon.

D D designate, respectively, a head-block and a support, which are securely fastened to I proy ICO i set-screw, c', operates to hold said guide stationary when adjusted. By this described construction of parts thc guides E and E may at all times be maintained in proper adjustment as regards thcrail B, as will be readily understood. The guide-plates E and l also serve to hold the stave-receiving bed from longitudinal movement, as will be readily apparent'.

I provide the head-block D upon its upper surface with an adjustable gage-block, F, the functions of which will be presently explained.

G G designatesupporting or bearing blocks that receive the stave, and by which said stave is adjusted in vertical direction towardor from the eutter-head.` )ne of said blocks, G, is provided with two screw-threaded rods, f/ g, and the other with a single rod, that extend downward through the bars C to adjust said blocks toward and from the bed C, and are provided upon the nppersides of said bars with jam-nuts g2 to secure said blocks in the desired adjustment. One of said bearing-bloeks-to wit, G- adjacent to the head-block isofgrcaterlength than its fellows, and is provided with a curved upper surface to afford an increased bearing to that part of the stave directly beneath the cutter-head, for which purpose I provide said block G with two adjusting-rods, g g', as shown.

II designates apertured studs that project downward from the bars C', near the ends thereof, to support rods I I, that extend below and parallel with the bed C nea'rl y from end to end thereof, and are held in position by nuts i, which are placcdjupon the screwthreaded ends of said rods and bear against the studs I-I, adjacent to the ends of the bed C. The rods I I operatcboth as truss-rods, to impart an increased rigidity to said bed, and also as the pivotal bearings or fulcrums of a series of clamping arms or levers, J J', each pair of which operate in conjunction within the slots c' of the bed. The levers or arms JJare conneeted by links l K with the upper member of a vertically-moving frame, L, which operates up or down between guides M, that are se cured to and project downward from the bed C.

Theframe L is preferably composed of two rods, L L, secured together in parallel planes by apertured blocks Z Z', one of which--to wit, Z-is provided with a screw-threaded extension, Z2, upon which operates a tcnsion-nut, Z", having its aperture provided with oppositel yent screw-th reads to engage the screw-threads of said extension Z2 and oppositely-cut screwthreads formed upon a short rod, Z, the opposite end of which is provided with a shoe, Z",

that bears upon a truss-rod, L, which extends between and is secured to the blocks Z at the ends of the frame L to prevent sagging of said frame, as will be understood. In practice the rods Ll L, comprised in the frame L, are placed one above thc other, as shown in Fig. 2, and are maintained in such position by the guides M, each of which preferably consists of a single strap of metal secured at its ends to the frame (l, and bent at the proper poi nts to form a guideway, m, (see Fig. 10,) having parallel sides; and by which, as before stated, the frame L is maintained in proper position.

I provide the clamping arms or levers .I J' at their upper ends with laterally-projecting blocksjj, providcdwith screwthreadcd apcrt-ures to receive adjusting-screwsj"j, to suit staves of different widths, as will be understood.

From the foregoing description it will be apparent that downward movement of the frame L will, through the links KK, operate to move the upper ends of each pair of clamping levers or arms toward each other, and that said arms will be opened or moved from each other by the opposite or upward movement of said frame. I therefore provide that said frame shall normal/ly be maintained at its highest limit of movement, and to this end I employ levers N N, pivoted to studs N" N, depending from the frame C. I provide the inner end of lever N with a slot, a, that embraces thc lower member or rod, L2, ofthe frame L, and the outer ends of each of said levers with weights N", which may be adjustably fixed to said levers.

'Ihe lever N', near the head-block D, I provide with a depending tooth, a', situated, preferably, at a point intermediate of its weight N and its pivotal point l to engage detents or recesses o o', formed in the curved upper surface of a way or track, secured to the frame A below said weighted lever. I preferably locate said detents at such poi nts in said track as shall at the time the tooth n of the lever is engaged thereby hold the frame C in stationary position at one or thc other of the limits ot its movement in lateral direction. (See dotted lilies, Fig. 9.)

N designates the lever by which the frame L is moved up and down when desired. Said lever extends ontwardlyat each side of the bed C, as shown, and is provided at its middle with a slot, p, that emlnaccs the lower member, U, of the frame L.

It designates the cutter-head, which may be provided with any desired style of cutters, which in the present instance consists in a toothed cutter or knife, S, adjustably secured by a screw, s, in a recess formed in the side of said head and adapted to cut the stave transversely ofits grain, and cutters or knives S', secured within slots formed in the periphery of said head. The head It is mounted upon a short countershaft, R', which is jonrnaled in bearings r, secured to the transverse ICO timber at-of the frame A and rotated through apulley, r', on said shaft by a belt from any desired motor.

The'operationof my improvement is as follows: The several bearing-blocks G G and the gage-block F of the frame are adjusted to permit the cutters to form a groove to the properdepth in and distance from the end -of the stave. The frame or bed C is now drawn to one side of the cntterhead, and is so held in stationary position by the engagement of the tooth n ot' the lever N with one or the other of the detents o or o of the segment O. A stave is now placed in position on thebearing-blocks G G and against the gage-block F. The lever N is now pressed downward, thereby bringing,thescrewsjtj3 of thc'clamping arms or levers .I J in-to engagementA with said stave, and at the same time releasing the tooth n of the lever N from the detent o or 0', by which it is held. The frame-or bed C, with its contained stave, is now pressed forward under the rotating cutter-head, the knives of which operate to form the desired groove in said stave, as will be understood. Upon releasing the lever N from pressure the toothv n of the lever N will engage the opposite of the detents o or o', and so hold the frame or bed C stationary for the removal of the stave.

The toot-h n of thelever N is adapted to remain in contact with the surface of its way or segment O during the forward passage of the frame or bed 0,(see Fig. 4,) and thus operates to hold the clamping arms or levers .I J or the adjustingscrews therein in engagement with the stave independent of the lever N.

Modifications in details of construction may be made in the within-described device Withoutdeparting from the spirit or sacrificing the advantages thereof.y I therefore claim the right to make any and all modifications as shall properly fall within the scope andlimit of my invention.

Without limiting myself to the precise construction and arrangement of parts shown, I claimy l. The combination, in a stave-crozing machine, of a stationary base, a cutter-head turning in fixed bearings above said base, a stavereceiving bed arranged to travel in a curved path from side to side of said base and cutterhead,bearingblocks adj nstably secured to said bed to support a stave, screws to adjust said blocks, and clamping-arms to clamp a stave to said blocks, substantially as described.

2. A movable stave-receiving bed having a series of vertically-adj ustable bearing-blocks, a series of clamping arms or levers to hold a stave in position upon said blocks, and means, substantially as described, to operate said arms or levers, in combination With a rotatable cutter-head carried` by a shaft turning in fixed bearings above saidbed, and the stationary base upon which said bed is placed and moves, as and for the purpose set forth.l

3. 'l`he combination, With the rotating cntter-head, of a laterally-moving bed having bearing-blocks, screws to adjust said blocks toward and from said cutter-head, a series of clamping arms or levers, and means, substantially as described, to operate said arms or levers and the stationary base upon which said .bed is placed and moves, substantially as herein described, for the purpose specified.

4. In astave-crozing machine, abase, abcd placed upon andlmoving transversely of said base, and provided with a series of verticallyadjustable bearing-blocks, a series of clamping arms or levers, and means, substantially as described, to adjust said blocks and to operate said levers, in combination with a rotating cutter-head, and means, substantially as described, to hold said bed in stationary position at opposite sides of said head, as and for the purpose specified.

F.r The combination, in a stave-crozing machine, ofa laterally-sliding bed having a series of vertically-adjustable bearing-blocks, rods attached to, extending below, and parallel with said bed, clamping arms or levers pi\ oted upon said rods, and mechanism, substantially as described, to operate said clamping-arms, and the cutter-head, and base of the machine, as and for the purpose specified.

6. In a stave-crozing machine, and in combination with a stationary base, and a cutterhead rotating above said base, a movable bed, C, having a series of vertically-adj ustable bearing-blocks, a series of clamping arms or levers fulcrumed upon rods secured to said bed, links connecting said arms to a verticallymoving frame, 'guides for said frame, and means, substantially as described, to raise and lower said frame to operate said clampingarms, as and for the purpose set forth.

ICO

7. In a stave-crozing machine, a stationary hase, a cutter-head rotating above said base, a transversely-moving frame or bed interposed between said cutter-head and base upon the latter, and a verticallymoving clamping-l frame operating in guides `attached to said bed, incombination with guide-plates E and E to hold saidv bed from longitudinal-movement, and-means, substantially as described, to operate said frame, as and for the purpose specified.

8. The combination of a stationary base, a cutter-head turning in fixed bearings above said base, and a stave-receiving bed arranged to move in a curved path from side to side of said base, with a vertically moving frame connected to said bed, and clamping-arms connected to said frame, substantially asdescribed. f

9. A movable stave receiving bed comprising a rectangular frame having a series of slots to' receive clamping-arms, a series of adjustable bearing-blockshaving screw-threaded shanks and nuts operating thereon, anda headblock secured to said frame and provided with aslot to receive one ofthe track-rails whereon said bed is mounted, in combination with said track-rails, a stationary base whereon said IIO track-rails are secured, and a cutter-head the y shaft of which rotates in a fixed plane above said bed, substantially as described.

10. A movable stave-receiving bed consisting of a rectangular frame lnrving transverse bars connecting its opposite sides, a series of adjustable beaiingbloeks upon said bars, and a head-block havinr,r an adjustable gage-block and slotted to receive one of the traclvrails whereon said bod operates, and guide-bars secured to said head-block at opposite sides of and in Contact with said trnclcrail, substantially as described.

11. In a slave crozinp; machine, a rectangular fraaie having a head'bloek secured thereto and provided with a slot to rceei ve one ofthe track-rails whereon said frame moves, and a IiXed and an adjustable guide at opposite sides, respectively, of said track-rail, and means to adjust said guide, in combination with said track-rail, the base to which it is secured, and a cuttervhead upon a shaft rotating in a fixed plane above said movable bed, substantially as described, for the purpose specified.

l2. The combination, in asiave-crozing machine, of a stationary base having traelerails `provided with curved upper edges to receive a movable slave-reeeiving` bed, said hed, adA

justable bearing blocks secured thereto, a head-block having guides that operate in contact with one of said track-rails, a series of clamping arms or levers, means, substantially as described, to operate said levers, and a cutter-head which rotates in a 'fixed plane paralicl with the face ofsaid bed, as and for the purpose specified.

13. In aslavecrozing machine, ahase, trackrails secured thereto, a movable bed operati ng upon said rails, and, provided with a series of transverse bars to receive adjustable bearinghloeks, and a series of depending guides to receive a vertically-moving frame, L, in combination with said frame, a series of clamping arms or levers operated thereby, ahead-block having grooves and guides to operate in connection with the track upon the base, anda rotating,r cutter-head operating in a fixed plane above said bed, substantially as described.

In testimony whereof' I have signed my name to this specification in the presence of two subscribing witnesses.

.IAM ICS TEST C ALL f\ II. AN.

Witnesses:

EUG. HENRY, I. F. lInNnv. 

